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Finding the Fourth Proportional to 395,506.38, 545,799.15 and 216,658.38

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Solution

The fourth proportional to 395,506.38, 545,799.15 and 216,658.38 is: 298,988.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,506.38 : 545,799.15 = 216,658.38 : x
  2. Step 2: Convert to fraction form
    395,506.38/545,799.15 = 216,658.38/x
  3. Step 3: Cross multiply
    395,506.38x = 545,799.15 × 216,658.38
  4. Step 4: Simplify right side
    395,506.38x = 118,251,959,644.38
  5. Step 5: Solve for x
    x = 118,251,959,644.38/395,506.38
  6. Step 6: Final answer
    x = 298,988.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.